function eye. Create the matrix A given below using MATLAB built-in 5 0 0 0 0 5 0 0 0 A= 0 0 5 00 0 5 0 5. Problem 2 (30pts): Write MATLAB commands to create a vector t from 1 (start value) to 20 (final value) by 0.5 (step increment) and calculate v => JO 10 Problem 3 (20pts): Write a MATLAB command to show the sentence The quiz is easy. Problem 4 (40pts): Write MATLAB commands to plot f as function of t. t ranges from 0 (start value) to 20 (final value) by 0.1 (fixed step size) and f = 6t + 5.